Patents by Inventor Albert E. B. Glissmann

Albert E. B. Glissmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the production of sodium dichromate
    Patent number: 4968503
    Abstract: A process for the production of sodium dichromate comprising reacting sodium chromate with acids, the acids being sulfuric acid and NaHSO.sub.4 formed as a waste product in the production of CrO.sub.3 and thus being contaminated with chromium compounds, adding PO.sub.4 ions in excess to the NaHSO.sub.4 contaminated with chromium compounds and precipitating the Cr(III) present therein as CrPO.sub.4 at a temperature of 50.degree. to 100.degree. C. and at a pH value of 3 to 6.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: November 6, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventor: Albert E. B. Glissmann